Engineering Drawing. Anup Ghosh. September 12, Department of Aerospace Engineering Indian Institute of Technology Kharagpur

Transcription

1 Department of Aerospace Engineering Indian Institute of Technology Kharagpur September 12, 2011

2 Example -1 1 A vertical square prism (50mm side) 2 A horizontal square prism (35mm side) with axis to VP 3 Faces of both the prisms are equally inclined to VP 4 Penetration is such that the axis also intersect 5 Height of intersection is not specified. It may be assumed that the axes are perpendicular bisector of each other

3 Example -1 1 A vertical square prism (50mm side) 2 A horizontal square prism (35mm side) with axis to VP 3 Faces of both the prisms are equally inclined to VP 4 Penetration is such that the axis also intersect 5 Height of intersection is not specified. It may be assumed that the axes are perpendicular bisector of each other

4 Example -1 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding plan and elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

5 Example -1 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding plan and elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

6 Example -2 1 A vertical square prism (50mm side) 2 A horizontal square prism (35mm side) with axis to VP 3 Faces of both the prisms are equally inclined to VP 4 Penetration is such that the axes are 6mm apart from each other 5 Height of intersection is not specified. It may be assumed that in the elevation axes are perpendicular bisector of each other

7 Example -2 1 A vertical square prism (50mm side) 2 A horizontal square prism (35mm side) with axis to VP 3 Faces of both the prisms are equally inclined to VP 4 Penetration is such that the axes are 6mm apart from each other 5 Height of intersection is not specified. It may be assumed that in the elevation axes are perpendicular bisector of each other

8 Example -2 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

9 Example -2 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

10 Example -2 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

11 Example -3 1 A vertical square prism (50mm side) of height 90mm with a face inclined 30 0 to VP and axis is to VP 2 A horizontal square prism (40mm side) of length 100mm with axis to VP and faces are equally inclined to VP 3 Penetration is such that the axis also intersect 4 Axes are perpendicular bisector of each other

12 Example -3 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

13 Example -3 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

14 Example -3 Interpenetration of Solids 1 Draw the side view and plan of the prism as required. 2 Complete the corresponding elevation without the intersection lines. 3 Try to imagine the front view and top view and project the intersection points as required. 4 Complete the drawing by joining the intersection lines.

15 Example -4 Cutting Plane Method 1 Imagine a cutting plane passing through 12-2 in side view 2 Corresponding plan will be a rectangle for the cylinder and a circle for the cone 3 Intersection points are p 2, p 12 and 2 more 4 Corresponding point on the elevation may be found out as p 2 and one more on the right hand side 5 Points where the intersection curve changes direction can be found out by drawing normal to the extreme generator of the cone from the center of the cylinder in the side view (distance between the cone surface and cylinder surface is minimum)

16 Example -4 Cutting Plane Method 1 Imagine a cutting plane passing through 12-2 in side view 2 Corresponding plan will be a rectangle for the cylinder and a circle for the cone 3 Intersection points are p 2, p 12 and 2 more 4 Corresponding point on the elevation may be found out as p 2 and one more on the right hand side 5 Points where the intersection curve changes direction can be found out by drawing normal to the extreme generator of the cone from the center of the cylinder in the side view (distance between the cone surface and cylinder surface is minimum)

17 Example -5 Line Method 1 Draw number of lines in the side view as o 1, o 2, o Similarly transfer the lines to plan and elevation as o1, o2, o3... and o 1, o 2, o Draw horizontal projectors from a and b of side view to corresponding points on the elevation at a and b 4 Draw vertical projectors from a and b to a and b of plan